Towards macroscopic optical invisibility devices: geometrical optics of complex materials
Abstract
Recently, a path towards macroscopic, transparent optical cloaking devices that may
conceal objects spanning millions of wavelengths has been proposed [1]. Such devices
are designed using transformation optics (TO) [2,3]. In this paper, we offer further
analysis and improvements to the concept using the method of geometrical optics extended
to complex photonic media with an arbitrary dispersion relation. A technique for solving
the highly nonlinear partial differential equation of the eikonal using the finite
element method is presented. Aberra-tions caused by the non-quadratic part of the
dispersion relation are demonstrated quantitatively in a numerical experiment. An
analytical argument based on the scalability of the eikonal phase is presented, which
points to-wards a solution that removes this type of aberration in each order of the
k-perturbation theory, thus restoring the perfect cloaking solution.
Type
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https://hdl.handle.net/10161/5075Collections
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Yaroslav A. Urzhumov
Adjunct Assistant Professor in the Department of Electrical and Computer Engineering
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<![endif]-->Dr. Urzhumov is Adjunct Assistant Professor of ECE at Duke University,
and also a Technologist at the Metamaterials Commercialization Center of Intellectual
Ventures. Previously a research faculty at Duke, he works on applied and theoretical
aspects of metama

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